BRITIPH ISLES. 31 



This paper, which is supplementary to one read by the author in 

 1872, gives an account of the boring to the depth of 620 feet. The 

 lithological and palseontological character of the beds are noted, and the 

 methods of boring are described. The author discusses the probable 

 range of the coal-bearing rocks between Belgium and the west of 

 England. W. T. 



Plant, John. On bones of Elephas primigenlus from a Cavern near 



Skipton. Trans. Geol. Soc. Slanchester, vol. xiii. part iii. p. 54. 

 The cavern has been rendered inaccessible for the present by the 

 workings of the limestone- quarries midway between Foulridge and 

 Kildwick Stations. C. E. De R. 

 . On the occurrence of Quartzite Boulders and Pebbles em- 

 bedded in true coal. Trans. Geol. Soc. Manchester, vol. xiii. part v. 

 p. 141. 

 A number of boulders were discovered in the Eoger Mine at Dukin- 

 field, at a depth of 400 yards, others at Pendlebury, and a group of 

 twelve in the Two-foot Trencherbone Mine, Spindle Point, Kersley. 

 They vary from the size of a marble to 3 feet in circumference ; the 

 corners are smoothed, but the form is sometimes irregular ; they cor- 

 respond to some metamorphic quartzites in the Cambrian rocks of North 

 Wales. Mr. Plant believes them to have been brought into the coal 

 by the denudation of Middle Palaeozoic glacial beds, filled with frag- 

 ments derived from North Wales. C. E. De R. 

 Playne, G. F. On the Recent Calcareous Deposits of the Cottes- 



wolds. Proc. Cotteswold Nat. Club, vol. vi. pp. 81-89. 

 The writer refers to the deposits of calc-tufa connected with many 

 of the streams from the Cotteswolds. The deposits at Chalford and 

 Dursley are mentioned particularly, as they have been used for build- 

 ing, as well as for purely ornamental purposes. Mr. Playne points out 

 the method of formation of such deposits, observing that the moss 

 Hypimm commutatum and other species of mosses and liverworts aid in 

 arresting the particles of lime as the water passes over them. 



Deposits of tufa take place when streams issuing from limestone 

 strata obtain " falls." Mr. Playne suggests the possibility of calc-tufa 

 being profitably produced by artificial appliances. He refers to some 

 stalagmitic deposits, and concludes by pointing out passages in the 

 former history of the lime which in the Cotteswold Hills has most 

 recently taken the form of tufa. H. B. W. 



Price, F. G. H. On the Gault of Folkstone. Quart. Journ. Geol. 

 Soc. vol. XXX. pp. 342-360 (section and plate of fossils). 



The author divides the Gault of Folkestone into eleven zones. Each 

 is described in detail, its mineralogical character and fossil contents 

 being given. Some analyses (by Mr. W. H. Hudlcston) are added. 

 The thickness of the Gault at Copt Point and the Pelter is 99 feet 

 4 inches ; this includes all the beds from the band of sulphide of iron 

 at the base up to the Upper Greeiisand. Of the 11 zones, 7 belong to 

 the Upper Gault (80 ft. thick) ; 3 belong to the Lower Gault (18 ft. 



